Calculating machine



J. c. WAHL.

CALCULMING MACHINE.

APPLICATION FILED AIII. I9. I92I.

Patented May 30, 1922.

HIE ATTUFQNF Y PATENT OFFICE.

UNITED STATES JOHN C. WAHL, OF CHICAGO, ILLINOIS, ASSIGNOR T0 REMINGTON ACCOUNTING MACHINE CORORATION. 0F NEW YORK, N. Y., .A CORPORATION OF NEW YORK.

CALCULATING MACHINE.

Application led April 19, 1921.

T0 '7N whom 7'1 may concern Be it known that I, JonN C. WAHI., citizen of the United States. and resident of Chicago. in the county of Cook and State of Illinois. have invented certain new and useful Improvements in Calculating Machines, of which the following is a specification.

My invention relates to calculating machines and is embodied in the present instance in a Remington-'ahl combined typewriting and calculating machine of the character known on the market as a cross footer." and which machine is disclosed in my Patent #1270471, dated June 1918; although it should be understood that the invention is not restricted to its embodiment in such machines.

In the construction disclosed in my said patent certain of the vertical totalizers which are carried by and adjustable along the carriage are provided with two different sized cams detachably fixed thereto. These cams are adapted during the travel of the carriage to coact with a follower which forms part of the actuatorcontrol or gear shifting mechanism of the' cross totalizer. 'hen a cam coacts with the follower the movement of the latter actuates the control mechanism to bring about. at the operation of a numeral key. either subtraction in the cross totalizer. or to disconnect and render the latter inoperative. depending on the character or size of the cam in operation.

In accordance with the present invention I provide on each vertical totalizer. or on each of a number of dummies which may be substituted for such totalizers if desired, a cam which is adjustably mounted thereon so that it may be set to coact with a follower sllch as that referred to above. in the same manner as thc two different sized cams disclosed in said patent. and also to obtain a setting of each of said cams for addition. ln the construction disclosed m my Patent #1349024. dated August 10. 1920. l ha ve embodied two adjustable cams on cach vertical totalizer to coact with the control mechanisms of two cross totalizers.

Une of the main objects of my present invention is to provide an improved adjustable cam mechanism of the character specified. further object of thc invention. generally stated. may be said to be to provide simple. strong and eiiicient means for effecting an adjustment of a cam on a carrier or totalizer Specication of Letters Patent.

Patented May 30, 1922.

Serial No. 462,822.

carried by the carriage. whereby said cam may be readily and accurately set and effectively held in any one of several positions to coactI with the follower of a totalizeractuator control mechanism.

To the above and other ends which will hereinafter appeal' my invention consists in the features of construction, arrangements of parts and combinations of devices set forth in the following description and more particularly pointed out in the appended claims.

In the accompanying drawings wherein like reference characters indicate corresponding parts in the various views.

Fig. 1 is a detail fragmentary front elevation showing a portion of a Remington- 'ahl cross footing machine embodying my invention.

Fig. 2 is an enlarged detail front view with parts broken away and parts in section of a vertical totalizer or dummfl equipped with an adjustable cam of my in` vention.

Fig. 3 is a vertical foreandaft sectional view of the same taken on the line 3-3 of Fig. .2 and looking in the direction of the arrow at said line.

Fig. 4 is a detail horizontal sectional view of the same taken on the line 4 4 of Fig. L and looking in the direction of the arrow at said line.

Fig. 5 is a detail sectional view of the means for attaching the upper portion of the locking plate to the carrier. the section being taken on the line 5-5 of Fig. i? and looking in the direction of the arrow at said line.

In the drawings I have illustrated only so much of a Remington-Yam cross footinof machine as may be necessary1 to arrive at an understanding of my invention in its embodiment therein: various of the details of said machine not shown in the accompanying drawings being well known in the art and fully illustrated in my hereinbe fore mentioned Patent #1.270.471.

lt will he understood that. in the present instance. the follower l carried by a crank arm 2 which is mounted on a rock shaft which is pivoted in the fixed actuator frame 3. may be connccted in the usual manner with the actuatlir-control or gear shifting mechanism of the cross footer (not shown). as is fully illustrated in my said Patent #1.270,471. As is well understood, the follower 1 in its lowermost position sets the control mechanism of the cross footer for subtraetiom whereas the uppermost position of said follower, to which it is moved by a spring, sets said control mechanism for addition An intermediate position `of said` follower, under control of a cam. results in said control mechanism being set to disconnect the actuator of the cross footer.

The member 4 which is, or may be, of the usual construction, and is sometimes referred to as the vertical or main truck or calculator carriage, is connected to travel with the typewriter carriage and travels to the right and to the left therewith. One or more so-called vertical totalizers 5 are detachably mounted on the truck 4, and each is adjustable to different set ositions along the truck. Where it may be he d by a springpressed. handreleased latch 6 adapted to engage teeth T on the truck.

The adjustable cam of my invention, which coacts with the follower 1 to position the actuator-control or gear shifting mechl anism. in some instances is mounted on cach vertical totalizer In other instances it is mounted on a so-called dummy, which may com )rise a frame such as the vframe of a totalizer 5 but which contains no totalizer mechanism therein and merelyr constitutes an adjustabtle carrier for the adjustable cam` and for other parts. Each of these dummies is intended to be used in the place of a totalizer 5 when the character of the work is such that no computation is to be entered in the vertical'totalizer within the field occupied by the dummy With this explanation Ain mind it will be understood that when I refer herein to a cari-ier" for the cam such term is intended to apply to the support on which the cam is adjustably mounted Whether such support oe a totalizer 5. or a dummy, or other form of support for the cam.

The frame of the totalizer 5. or dummyf has its side plates 9 apertured at 10 to receive and have seated therein lu s or reduced end portions l1 of a vertica ly disposed support or cross plate 12, in order to secure this supporting plate fixedly to the frame.

Riveted to the supporting plate 12, as indicated at 13, and extending forwardlv therefrom. are two parallel studs 14 each internally threaded to receive the stem of a headed screw 15.' The outer cylindrical surface of each stud 14 forms a pivot bearing for a hub 16 or 1T of an adjusting device or member which in the present instance is in the nature of a lever. as will hereinafter appeal'. Riveted at 18 to the huh 16 is a sheet metal plate 19 which constitutes a lever arm that extends from its fulcrum or pivot 14 to the left Where it is provide-d near its end with a rearwardly projecting pin 20. This pin is seated in a horizontally dis A posed slot 21 near one end of an adjustable sheet metal cam plate 22 arranged parallel with and bearing against the front face of the supporting plate 12. The arallel ends 23 of the plate 22 are received etvveen and coact with the inner faces of the parallel side plates 9 of the frame or carrier. to prevent a longitudinal displacement of the plate 22 on the carrier and to guide the plate in its up and down adjustments thereon to different positions parallel to each other. The plate 22 has a cam edge 24 which acts on the follower 1. The cam plate 22 is slotted at 25 to enable the studs 14 to passtherethrough and not interfere with the adjustment of the cam plate on the carr1er.

The hub 1T carries a separate adjusting member 26 which corresponds to the membe 19, but extends to the right from its fulcrum where it carries a rearwardly projecting pin 27. which is seated in a horizontally disposed slot 28 near the right-hand end of the cam plate. Both of the pivoted adjusting devices 19 and 26 are thus connected by pin and slot connections to the cam plate at different points in the length, or near the ends, of the latter, and are arranged in a plane parallel with the cam plate. pivotal movement of the adjustlng devices in opposite directions is opera tive therefore to effect a rectilinear up and down adjustment o'fthe cam plate.

In order that the pivoted adjusting devices may move in unison, and therefore simultaneously effect corresponding extents of adjustment at opposite ends of the cam. I have provided means whereby a pivotal movement transmitted to one of said devices will eausea corresponding pivotal Inove-` ment of the other, In the present instance this is brought about by extending each lever-like member 19 and 26 inwardly heyond its fulcrum and hub and providing an interlocking connection between them. Thus. as shown. the member 19 is provided' with gear teeth 29 which intermesh with corresponding teeth 30 on the member 26. so that a pivotal movement of the member 19 will cause a corresponding extent of ivotal movement of the member 26` but 1n the opposite direction` and the pins 20 and 2T will be raised or lowered together and a corresponding adjustment of the cam plate and cam effected at both ends thereof.

In order to provide hand controlled means for effecting an adjustment of the devices 19 and 26. and the cam connected therewith, and for retaining. or positivelv locking. the same in any of a number-of different set positions to which they may he adjusted. l provide a lever-like arm 31 riveted at 32 to the forward end of the hub 16, or otherA wise `{ix'edly' connected tothe hub 'to turn therewith. The arm 31 mev be further E x'edly'fconnected to the 4member 19 by es-V tedingtthe pin 2O forward from the latter 5at:20"(Fig. 4)' and rivetin it M90" to-the arl 31. "The arm 31 exten s upward in the re'rzof a fixed index or locking plate 33 mtintaiined'spaced apart' from, lbufl secured tothe{rzilneof the'carrier 5, and situated at' the frontth'e'rei This-plate may be secured et its lower portion to 'the carrier bg' being apertured 'so ns to sea-t itself on t e"redu`cedfends of the studs 14. The' head of each"'screw-v 15 holds the plate a inst 'the shlde formed v-onv the associate lstud where'the reduced" portion of the stud joins th'd'ma'n body4 portieri thereof,"a.s shown mlliglf. "The u per'positiol'i'jof theA p'lete fnihylbe'secure the carrier, es represe1'ife`d i'n' Fi' '5,"fby' two headed screws 34, each of'wliich holds the late oni-'e reduced portion. of 'a'hollow stu or spacing sleeve 251-'34` lio ds the'plete 33:aginst a shoulder' 3? foredby reducing thefforwerd end portiohgoffthestud. The' plete'33 Vhes three riiriefh in' en arc 'around the pivotal center of t erm 31!" A forwardly projecting stud or de tent39- 'fixed to the arml fits betweenfthesde wallsiof each opening V3S when 'seeted therein` and locks the varm 3l to the-plato 33 againsttuming movement. 351The erm Blf-however, is resilient 'fore und aft'f the'mecliine, or laterally of the directibnfo'f'ts nii/jota] movementtand muy be flexedrearwardly 'from its flocked posltiou to"dsegegejthe"detent 39 from a locking vicl-opening 38. Thearm'mey then be turned to' bring th'e' stud opposite another opening 38 and when the 'erm is released the stud or detentfwill enter the opening with which it' is in register, thus locking the arm 3 1 'and the parte controlled thereby in then uewly"ad]usted positions.

In orderfto facilitate manipulating the arm 31- I 'ha-ve dprovided it with 'a finger niece-40 theade ontoa screw stud 41, the letter being'v riveted at its rear end to the arm 31; The screw stud 41.y and the stern of thenger piece 40 which surrounds it. extend through u curved slot 42 in the plate 33; The-ends of the slot 42 coasting with v the stem on the finger piece 40. limit the extreme movements of the erm 31 in oppo site directions, thus preventin l disengage ment of thc teeth 29 andi() of t 1e adjusting devices.

[have Provided on the front face of the indexor" ocking plate 33. atea/ch opening 38 therein. un index o1' symbolto aid in properly setting the cem. In the present instance the symbols S.` D, fA, are o5 -:i1-'ranged fromleftto right in the order lockinopenings or recesses 38 therein nr-V4 name-d, one neareach o ning38. When the arm '31 isset andioed in the-position sliowuin Fig. '2, 'and as indicated by -the symbol "S,V the-cam is adjustedV tofand locked in' itslowermostllpositionwhere it 70 will coect with the followerl-to control the geur shifting mechanismwfor subtraction. When the-erm 31-'is hdjustedf'to'zand-.loeked in the other' extremeposition -tth :symbol AP the cam -will be 'adjusted ltofand locked 751 in its hi liest position -of adjustment Ewhere it will a low the followeu-Ltouove high' enough to set the 4gear shiftingmechenism for eddition'." When thermi isiedjusted` to and locked 'in'theintermediate "tiongid indicated b .the symbol-D2ithelcemt-willjr be adjustetoendfmnitained in its--interff mediate position-"where it 'fuctsfson theL tfolz: lower so es tomailtain-themetiiatorffor-ithef cross totalizer disconxiectedf'rlllhefr: interme: i8 5. diete and upperlpositions of thecum'sfedge 24 are indcetednllig: 2lby'fnbrokemlin`esi It will bef thiitf in .the ipresentimenstru'ction fthe m'smner of monntinv' thel ad justebleeamjnnd `thetpeirtsvbyfWliieh-iit"is adjusted and locked'in :adjusted position; iis,y such that said 'eem and f'sgid partei cannot f drop. or he `aceidenimllyf detsrchedwfiioin. the* carrier, which vdete'elrimeut #mi'glf resultirii'r.: the parts in yquestiolrbe'iig:f'rriisjilmiedor Alostffl with the consequent' .unnoyanoe'that Awould! result therefrom. "Irh'cafrn.p'late 12 s'fguid ed fro-nt l'amd beckdfbetweenthel 'rax'no plate 12 on the one"land=s.nd'the=pris"l9. und 1-26 -on theroth'er, 'and "as hereihbeore E100 pointed out i's` guided iiright and f fleft die rectionslhy the :frame plaitesl.

Various changesmny be'ixnade .without cle` parting from my invention;y

'What I clim as'new and rdesneto secure 10 by Letteis Pritefnt. is;

"1J Tn e calculating miicmne,"the'.ziombinn tion of e' curringefn followeryoning part of n totnlfer-actuntor control'mechniiismuw carrier on said "carriagfd'fje'cam carried b v :11 said carrier and co-operative with'se'ddy followergand -meenson said carrier-'for fadjust-` ing said cam. seid means comprising two separate 'movable adjusting devices co-operetive with l'seid cnm at 'dilerent points'inVlL5 the length thereof.4 und means compellingr seid devices to move-in'unson'imd' thus control the movement of the cam to dilerent set positions parallelto each otherl 2. In :i cnlculatingmachineutne-c0mmua- 130 tion of :l -cariege'yw'follower Tfor-minst parti of ln' totaliner-actuator control mechanism. n carrier adjustable to different positions along the c urria{ re,` e cam'arried byrsaid'carrer and cio-operative with suid"rfollower,a.nd 125 means ou'saidcarrier forrmdjustini: '-said cam, said means oomprisn'gftwo separate movable adjusting 'devices coloperative'with said cam, one neer-feaeh-Jend 'thereoi :'means compe g`s`aid devices to-move imunisonflo and thus control the movement of the cam to different set positions parallel to each other, a hand-actuated member for controlling the movement of said devices. and means for locking said hand-actuated member in different set positions.

3. In a calculating machine, the combination of a carriage. a follower forming part of a totalizer-actuator control mechanism, a carrier on said carriage, a cam carried by said carrier and co-operative with said follower, and means on said carrier for ad justing` said cam, said means comprising two separate pivoted adjusting devices with interlocking connections between them so that the movement of one causes a corresponding movement of the other of said devices, an

operative connection between each of said devices and the cam. and a handactuated member connected with one of said devices for controlling its movement.

4. In a calculating machine, the combination of a carriage, a follower forming part of a totalizer-actuator control mechanism, a carrier on the carriage, a cam carried by said carrier and co-operative with said follower, and means on said carrier for adjusting said cam, said means comprising two adjusting devices mounted to turn on separate pivots, interlocking means for causing said devices to turn in unison. a positive connection between each of said devices and said cam, a hand-actuated member connected to one of said pivoted devices to turn it to different set positions, and symbols or indices on said carrier and with which said hand-actuated member is adapted to register to indicate the different positions to which said cam may be adjusted.

5. In a calculating machine. the combination of a carriage, a follower forming part of a totalizer-actuator control mechanism, a carrier adjustable to different positions alonpr the carriage, a cam carried by said carrier and co-operative with said follower, and means on said carrier for adjusting said cam, said means comprising,7 two pivoted adjusting devices. intermeshinlc1 toothed connections between said devices to cause them to turn in unison in opposite directions` a pinand slot connection between each of said adjusting devices and said cam, and a hand-actuated member tor controlling the turning movement of said adjusting devices.

6. In a calculating machine. the combination of a carriage. a follower forming part of a totalizer-actuator control mechanism, a. carrier on the carriage. a cam carried by said carrier and (fo-operative with said follower. and means on said carrier for adjusting said cam. said means comprising two pivoted adjusting devices. intermeshing toothed connections between said devices to cause them to turn in unison, a pin and slot connection between each of said adjusting devices and said cam, a hand-actuated meniber for controlling the turning movement of said adjusting devices, and means for posi tively locking said hand-actuated member to said carrier in any of the positions to which said member may be moved to determine the dilerent set positions of the cam.

7. In a calculating machine, the combination of a carriage, a follower forming part of attotalizer-actuator control mechanism, a carrier adjustable to different positions along the carriage, a cam carried by said carrier and co-operative with said follower, and means on said carrier adjusting said cam, said means comprising two pivoted adjusting devices connected to turn in unison, pin and slot connections between said adjusting devices and said cam and connect- 'ing with the latter at different points in its length, a hand-actuated member for contro ing the turning movement of said adjusting devices, a detent carried by said hand-actuated member, an apertured plate fixed to said carrier and in the different apertures in which said detent may be seated to lock said member and the adjusting devices controlled thereby in the different set positions to which they may be adjusted, and a symbol or index near each aperture to indicate each of several different positions to which the cam may be set.

8. In a calculating machine, the combination of a carriage, a follower forming part of a totalizer-actuator control mechanism, a carrier on said carriage, a cam adjustable on said carrier and co-operative with said follower, two adjusting levers operatively connected with said cam at diierent oints in the length of the latter, and han controlled means for effecting the adjustment of said levers and including means for compelling them to move in unison.

9. In a calculating machine. the combination of a carriage, a follower forming part of a totalizer-actuator control mechanism, a carrier adjustable to different positions along said carriage, a cam adjustable on said carrier and co-operative with said follower, two levers arranged parallel to the plane of adjustment of said cam and each connected to said cam near one end thereof, handcontrolled means for ell'ecting the adjustment of said levers and includingr means for compelling them to move in unison, and means by which said levers are retained in difterent adjusted positions.

10. In a calculating machine, the combination of a carriage, a follower forming part of a totalizer-actuator control mechanism, a carrier adjustable to different positions along said carriage. a cam adjustable on said carrier and co-operative with said follower. two adjusting levers connected to said cam at different points in the length thereof and operativelyY connected together to turn in unison` and a hand-controlled arm connected to one of said levers for,` turning it.

ll. In a valculating machine, the .combination of a carriage, a follower forming part of a totalizer-actuator control mechanism, a carrier on said carriagqa camgadjnstable on said carrier and co-operative'with said follower-two levers connected to said cam at different points in the length `thereof and operatively connected together to #turn in unison. :i hand-controlled arm connected to one of said levers for turnin it, and means for locking said arm in di erentset positions to which it may be adnsted 12. ln a calculating machine, the combination of a carriage, a follower forming part of a totalizer-actuator control mechanism, a carrier adjustable to different positions along said carriage, a @am adjustable on said carrier and co-o erative with said follower, a pivoted han -cntrolled 31TH: carry ing a detent and capable of being flexed laterally of thedirection of its pivotal movement to control the engagement and disengagement of the detent, adjusting means controlled by the pivotal movement of said arm Aand operative to effect a rectilinear adjustmeii't of said cam to different set positions, and an apertured plate fixed to said carrier and in any of the apertures in which said detent is adapted to be seated to lock said ar'm and the ram controlled thereby in different set positions to which they may be ad'usted.

bi l'ted at Chicago, in the county of Cook and t tate of Illinois, this th day of April, A. D. 1921.

JOHN C. WAHL.

lVitnesses:

IVAN D. Tnrr'r, E. G. Wxunxs. 

